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Final answer:Under-coverage in statistics occurs when certain individuals are not adequately represented in a sample.Explanation:Under-coverage in statistics refers to a situation where some members of the population are not included or represented adequately in a sample. One possible cause of under-coverage is aconvenience sample, where only individuals who are easily accessible are chosen for the sample, leading to a potential bias in the results. However, under-coverage is not a result of arandom sampleor asimple random sample, as these sampling methods aim to include all members of the population.Learn more about Under-coverage in statistics here:brainly.com/question/30164930...